BrassCraft 335252 CSSC11-18 ProCoated Stainless Steel Gas Connector, 3/4-Inch M.I.P 1/2-Inch I.D. (5/8-Inch O.D.) 15/16-16 thread Coated gas appliance connector Made from 80-85 percent recycled materials The brass bar stock comes from 100 Percent recycled material Stainless steel